According to the National Weather Forecasting Centre of the India Meteorological Department :
♦ Southwest Monsoon has further advanced into some more parts of Maldives-Comorin area, Southwest &Eastcentral Bay of Bengal, most parts of Southeast Bay of Bengal and some parts of Westcentral Bay of Bengal today the 27th May morning.
♦ Conditions are likely to become favourable for onset of Southwest Monsoon over Kerala around 31st May 2021.
♦The Deep Depression over south Jharkhand and neighborhood moved nearly northwards with a speed of about 05 kmph during past 6 hours and lay centred at 0830 hrs IST of today, the 27th May, 2021 over south Jharkhand and neighbourhood, near latitude 22.9°N and longitude 85.5°E, about 70km west-northwest of Jamshedpur and 65 km southeast of Ranchi . The system is very likely to move nearly northwards and weaken into a Depression during next 03 hours.
Under its influence:
 Rainfall Warning: isolated heavy to very heavy rainfall with extremely heavy falls likely over Bihar on 27th; heavy to very heavy rainfall over Jharkhand, West Bengal& Sikkim on 27th; over East Uttar Pradesh on 27th & 28th and over Bihar on 28th and heavy rainfall likely over Odisha and Chhattisgarh on 27th May.
Weather Warning during next 5 days27 May :
♦ Thunderstorm with lightning & squall  very likely at isolated places over East Uttar Pradesh; with lightning & gusty winds  very likely at isolated places over Jharkhand, Gangetic West Bengal and Andaman & Nicobar Islands; with lightning & gusty winds  at isolated places over East Rajasthan, Bihar, Sub-Himalayan West Bengal & Sikkim, Telangana and with lightning at isolated places over Madhya Pradesh, Chhattisgarh, Arunachal Pradesh, Assam & Meghalaya, Nagaland, Manipur, Mizoram & Tripura, Madhya Maharashtra, Konkan & Goa, Coastal & South Interior Karnataka, Tamil Nadu, Puducherry &Karaikal, Kerala &Mahe and Lakshadweep.
♦ Dust raising winds very likely at isolated places over West Rajasthan.
♦ Heavy to Very Heavy Rainfall with Extremely Heavy Falls at isolated places very likely over Bihar; Heavy to Very Heavy Rainfall at isolated places over East Uttar Pradesh, Jharkhand and West Bengal & Sikkim and Heavy Rainfall at isolated places over north Chhattisgarh, Andaman & Nicobar Islands, Odisha, Assam & Meghalaya, Tamil Nadu, Puducherry &Karaikal and Kerala &Mahe.
♦ Squally Weather  very likely to prevail over Southwest, Westcentral& Northwest Arabian Sea and over Southwest, Westcentral& Northwest Bay of Bengal, Gulf of Mannar and Comorin Area and along & off Coastal Andhra Pradesh, Tamil Nadu, Kerala & Lakshadweep coasts. Fishermen are advised not to venture into these areas.
28 May :
♦ Thunderstorm with lightning & squall  very likely at isolated places over East Uttar Pradesh; with lightning & gusty winds  at isolated places over Andaman & Nicobar Islands; with lightning & gusty winds  at isolated places over Bihar, Jharkhand, Telangana and with lightning at isolated places over West Uttar Pradesh, Madhya Pradesh, Vidarbha, Chhattisgarh, Madhya Maharashtra, Marathwada, Konkan & Goa, Coastal Karnataka, Kerala &Mahe and Lakshadweep.
♦ Dust raising winds very likely at isolated places over West Rajasthan.
♦ Heavy to Very Heavy Rainfall at isolated places very likely over East Uttar Pradesh and Bihar and Heavy Rainfall at isolated places over Sub-Himalayan West Bengal & Sikkim and Andaman & Nicobar Islands.
♦ Squally Weather  very likely to prevail over Southwest, Westcentral& Northwest Arabian Sea and over Southwest, Westcentral& Northwest Bay of Bengal, Gulf of Mannar and Comorin Area and along & off Coastal Andhra Pradesh, Tamil Nadu, Kerala & Lakshadweep coasts. Fishermen are advised not to venture into these areas.
29 May :
♦Thunderstorm with lightning & gusty winds  very likely at isolated places over Rajasthan; with lightning & gusty winds  at isolated places over Uttarakhand, Jharkhand, Andaman & Nicobar Islands, Madhya Maharashtra and Telangana and with lightning at isolated places over Uttar Pradesh, Madhya Pradesh, Vidarbha, Chhattisgarh, Marathwada, Konkan & Goa, Coastal Andhra Pradesh &Yanam, Coastal & North Interior Karnataka, Tamil Nadu, Puducherry &Karaikal Kerala &Mahe and Lakshadweep.
♦ Thunderstorm/Duststorm  likely at isolated places over West Rajasthan.
♦ Heavy Rainfall very likely at isolated places over Bihar, Andaman & Nicobar Islands and Kerala &Mahe.
♦ Squally Weather  very likely to prevail over Southwest, Westcentral& Northwest Arabian Sea, Northeast Arabian off Gujarat-Maharashtra coast and over Southwest, Westcentral& Northwest Bay of Bengal, Gulf of Mannar and Comorin Area and along & off Coastal Andhra Pradesh, Tamil Nadu, Kerala & Lakshadweep coasts. Fishermen are advised not to venture into these areas.
30 May :
♦ Thunderstorm with lightning & gusty winds likely at isolated places over East Rajasthan and Kerala &Mahe; with lightning & gusty winds at isolated places over Uttarakhand, Punjab, Haryana, Chandigarh & Delhi, Gangetic West Bengal, Andaman & Nicobar Islands, Madhya Maharashtra, Telangana and Lakshadweep and with lightning at isolated places over Uttar Pradesh, East Madhya Pradesh, Vidarbha, Odisha, Arunachal Pradesh, Assam & Meghalaya, Marathwada, Konkan & Goa, Coastal Andhra Pradesh &Yanam, Rayalaseema, Karnataka and Tamil Nadu, Puducherry &
Karaikal.
♦ Thunderstorm/Duststorm  likely at isolated places over West Rajasthan.
♦Heavy Rainfall at isolated places likely over Assam & Meghalaya and Kerala &Mahe.
♦ Squally Weather  very likely to prevail over Southwest, Westcentral& Northwest Arabian Sea; over Northeast Arabian off Gujarat-Maharashtra coast; over central & south Bay of Bengal & Sri Lanka coast. Fishermen are advised not to venture into these areas.
31 May :
♦ Thunderstorm with lightning & gusty winds likely at isolated places over East Rajasthan and Kerala &Mahe; with lightning & gusty winds at isolated places over Uttarakhand, Punjab, Haryana, Chandigarh & Delhi, West Uttar Pradesh, West Bengal & Sikkim, Telangana and Lakshadweep and with lightning at isolated places over East Uttar Pradesh, Odisha, Andaman & Nicobar Islands, Arunachal Pradesh, Assam & Meghalaya, Nagaland, Manipur, Mizoram & Tripura, Madhya Maharashtra, Konkan & Goa, Coastal Andhra Pradesh &Yanam, Rayalaseema, Karnataka and Tamil Nadu, Puducherry &Karaikal.
♦ Thunderstorm/Duststorm  likely at isolated places over West Rajasthan.
♦ Heavy Rainfall likely at isolated places over West Bengal & Sikkim, Arunachal Pradesh, Assam & Meghalaya, Tamil Nadu, Puducherry &Karaikal and Kerala &Mahe.
♦ Squally Weather  very likely to prevail over Southwest, Westcentral& Northwest Arabian Sea; Northeast Arabian off Gujarat-Maharashtra coast; over central & south Bay of Bengal & Sri Lanka coast. Fishermen are advised not to venture into these areas.
Weather Warning during next 5 days